All gates green. Final report: **Phase 109 — final verification pass (all 3 tasks were already complete; no re-implementation needed)** - Verified D15 (thinking-handler re-open `block.open = true` after `ensureThinkingBlock`; delta keeps closing; "never reopens" narrative removed; restore path still collapses) and D16 (single static `#turn-loader` in composer row, `aria-hidden`, sole `turnLoader.hidden = !inFlight` write in `setUiState`; CSS reuses `typing` keyframes + reduced-motion override after the main rule + provenance; global `[hidden]` guard intact; mock `TURN_PROGRESS_TRIGGER` repro marker; `app/` untouched — pure UI phase). - Unit pins: `tests/unit/test_frontend_turn_loader.py` (9 tests) — green via full run. - `uv run pytest tests/e2e/test_turn_progress_loader.py -v --no-cov` → **3 passed** (isolation, DB up): loader visible send→tool-gap→final-thinking, hidden after done; re-opened scratchpad carries `marker-thought-42`/`marker-final-thought-42`; `#send-status` carries state text, back to empty idle; reduced-motion context stills dots (computed `animation-name: none`) with loader still visible. - Regressions in isolation: `test_thinking_display` 5 passed, `test_stop_generation` 3 passed, `test_big_read_progress` 4 passed, `test_loading_feedback` 5 passed. - `uv run pytest` → **2314 passed**; `uv run pytest --cov=app --cov-report=term-missing` → **TOTAL 99%** (>90%); `uv run ruff check .` clean; `uv run pyright` → 0 errors, 0 warnings. - All terminal paths (done→idle L2554, stream error→error L2543, timeout→error L2247) funnel through `setUiState` — never-stale by construction. - No defects found; no code changes made in this pass. Commit + phase-dir move left to the harness per pipeline rules (working tree carries all changes). - Next pending phase: `108_history_wire_check` (still in `todo/`; out of scope here).